burst (one's) bubble

To bring someone back to reality, especially if they are dreaming or fantasizing about something unrealistic. Look, I hate to burst your bubble, but there is no way you're getting into Harvard! You're a C student!

Common Names:

Name	Pronounced	Usage
Osgar	-	Anglo-Saxon
Usama	-	Arabic
Joab	JO-ab (English)	Biblical
Arati	-	Indian, Hindi, Marathi
Benjamim	-	Portuguese
Tezcatlipoca	-	Aztec and Toltec Mythology